Select range of rows around user input start date
I am working with a large data set spanning many years, which can be simplified to two columns named "ID" and "Test_date" . Date is formatted as 'm/d/y', and the data table is sorted chronologically. I would like to select all of the rows where the test date is within one year (before or after) of the Test_date specified by the user, and then delete all other rows from the data table. Below is w...
dale_lehman